Time Allocations 
You can manually change the availability of a resource without referencing the order operation. To do so, you create a time allocation. This may be necessary if, for example, an employee is sick or a tool breaks down at short notice.
The basis availability (for example, working time and shifts) of a resource remains unaffected.
You have defined the possible time allocations for each resource type in Customizing under .
When you allocate times for a personnel resource, you can choose between the following alternatives, for example:
Vacation
Illness
Overtime Hours
When you allocate times for a tool, you can choose between the following alternatives, for example:
Preventive maintenance
Repair
You can create time allocations that are repeated at regular intervals for one or more resources using report /MRSS/WFM_MASTERDATA_ADMIN_HR. For each time allocation, enter:
A time allocation type
A maintenance period with start date
A repetition interval
You can also specify:
A description of the time allocation type
An on-call type and its description. The system suggests the text from Customizing for on-call types here.
You can plan periodic time allocations on a daily or weekly basis. If you choose Weekly, you can specify a different time interval for each weekday. When you execute the report, the system creates the time allocations in the given template for all resources specified.
You create a time allocation by choosing .