FTE

Before getting into FTEs (Full Time Equivalents), you need to:
1. Know your goal.
2. Prepare a hierarchical map of the work packages you will need to achieve your goal (WBS).
3. Detail the lower level work packages, until you have tasks that can be accomplished by one individual in a week or so.
4. Estimate the number of hours for each role that you will need in a day (or week or month).

Then you can calculate the man-hours per day (or FTEs) that you will need.
It works both for continuous processes and for projects.

As you and your team develop skills, the required FTEs decrease, or the total work performed increases.

Of course this is only a practical, but rough approach. Real people have a heart, and perform different than mathematical FTEs.

Fungus