Position settings and assignment rules
Choose external ID behavior and organization-wide assignment rules.
Updated September 11, 2026
In this article
- Before you begin
- Choose the right position setting
- Configure external assignment IDs
- Choose an assignment rule
- Understand what the rule checks
- Example: moving to one-to-one assignments
- Example: a shared position
- Plan a policy change
- Use the start date correctly
- Verify the result
- Related setup
- Does a one-to-one rule mean a position must always be staffed?
Use Position settings to choose whether employee assignments can overlap, and when a new organization-wide assignment policy begins.
Position, assignment, and employee external IDs follow the same organization-wide usage and management rules. Position and assignment controls are on this page. Employee controls are in Employee settings. See Position numbers and external IDs for the position controls.
Before you begin
You need the Manage position setup permission to change these settings. Review organization-wide effects before saving.
Choose the right position setting
| Decision | Use this guidance |
|---|---|
| Change the prefix or number of displayed digits in a position number | Position numbers and external IDs |
| Show, label, require, or correct an external position ID | Position numbers and external IDs |
| Show, label, require, or assign ownership of an external assignment ID | Use External assignment ID on this page, then review Manage assignments |
| Limit which employee and position assignments may overlap | Continue with this article |
| Create fields or choice lists for positions, employees, or assignments | Fields and choices |
| Create work schedule choices | Work schedules |
Position settings do not define departments, job code rates, actual compensation, approval reviewers, or report access. Use the setup area that owns each decision.
Configure external assignment IDs
Choose one usage for the external assignment ID:
- Not used hides the field from assignment forms, details, search, and assignment imports. This is the default for organizations that do not match assignments with another system.
- Optional shows the field and allows a blank value.
- Required requires a value when FTE Tree manages the ID. Existing blank records remain available for review and correction.
Choose FTE Tree when authorized users and reviewed imports maintain the ID. If a certified human resources system connection is available for assignment IDs, you can choose that connection instead. An integration-managed ID is read-only in local forms and cannot be created by an assignment import. If a required ID is missing, review it through the connected system. You can still make unrelated changes in FTE Tree.
The integration option appears only when the selected connection is certified to manage assignment identifiers. Creating an HRIS connection does not by itself give that connection ownership of the field.
Choose an assignment rule
Choose whether overlapping assignments are flexible, limited to one position per employee, limited to one employee per position, or one-to-one. A restrictive choice needs a start date and checks existing assignments before it can be saved.
| Rule | Use it when |
|---|---|
| Flexible | Employees and positions may both have overlapping assignments |
| One position per employee | An employee may have only one active assignment, but a position may have several employees |
| One employee per position | A position may have only one active employee, but an employee may hold several positions |
| One-to-one | Each employee and each position may have only one active assignment |
The rule applies when assignment dates overlap. It does not prevent a person from moving from one position to another after the earlier assignment ends, and it does not require every position to be staffed.
Use the least restrictive rule that matches the organization’s real staffing policy. A rule that is stricter than normal operations creates avoidable blocks during employee moves, shared appointments, temporary coverage, and imports.
Understand what the rule checks
The rule compares active assignment dates for the same employee, position, or both, depending on the choice.
- Flexible allows an employee to hold overlapping positions and a position to have overlapping employees.
- One position per employee prevents one employee from holding overlapping positions. It still allows several employees to share one position when their combined FTE is allowed.
- One employee per position prevents overlapping employees on one position. It still allows one employee to hold several positions.
- One-to-one applies both limits.
Assignment FTE is a separate check. A flexible assignment rule does not permit assigned FTE to exceed the organization’s allowed position capacity without producing an overassignment condition. See FTE, assignments, and vacancy for that calculation.
Example: moving to one-to-one assignments
An employee has a 0.5000 FTE assignment in position A and a 0.5000 FTE assignment in position B on September 1. That staffing pattern conflicts with a one-to-one rule beginning September 1.
End or correct one assignment before saving the stricter rule. If the organization will continue to use shared appointments, choose a rule that permits them.
Changing the rule does not rewrite assignment history. Resolve conflicts first, then save the stricter rule.
Example: a shared position
A 1.00 FTE position is shared by Morgan at 0.60 FTE and Lee at 0.40 FTE during the same dates. One employee per position and One-to-one would block that approved staffing pattern. Flexible or One position per employee can allow it, subject to the employee side of the selected rule.
Do not choose One-to-one simply because the combined assignment is exactly 1.00 FTE. The rule counts overlapping employee-to-position relationships, not only the total FTE.
Plan a policy change
Before changing an organization-wide setting:
- Write down the business reason and the first date the policy should apply.
- Review assignments that overlap on or after that date.
- Confirm whether shared positions, joint appointments, temporary coverage, or employees with several positions must remain possible.
- Correct assignment dates or relationships that are genuinely wrong.
- Test the proposed rule with one allowed pattern and one pattern that should be blocked.
- Tell people who create assignments or prepare assignment imports what will change.
Do not use a stricter rule merely to fix one unusual record. Correct the record when it is wrong; change the organization rule only when the policy itself changed.
Use the start date correctly
The start date is the first date the assignment rule applies. A future start date gives the organization time to resolve conflicts before the new policy begins.
Earlier staffing history remains visible under the policy that applied at the time. A later rule does not rewrite an earlier valid shared appointment. When reviewing a blocked assignment, compare its full date range with the rule start date and every other assignment that overlaps those dates.
If the organization recorded the wrong rule or date, review the affected assignment history before correcting the setting. A correction can change which past assignment patterns are considered valid.
Verify the result
- Create or open a representative employee and position.
- Add an assignment pattern the new rule should allow.
- Try an overlapping pattern the rule should prevent.
- Review dates immediately before and on the rule start date.
- Confirm earlier valid assignment history remains visible.
- Validate a representative assignment import if your organization uses imports.
- Open Activity for position settings and confirm the policy reason is understandable.
Related setup
Use Manage assignments for the day-to-day steps to create, change, or end an employee assignment. Use Staffing or assignment issue when an existing assignment is blocked or produces an unexpected staffed, vacant, or overassigned result.
Does a one-to-one rule mean a position must always be staffed?
No. It limits overlapping assignments. A position can still be vacant.