Hello Sir,
first you should make sure that the equipment category of the rotation equipment is allowed to be installed at a functional location (customizing path: Master Data in Plant Maintenance and Customer Service -> Technical Objects -> Equipment -> Equipment Usage Period -> Define Installation at Functional Location).
1. step: "Installation at EQ1"
Open rotation EQ with IE02 and change the installation location on tab "Structure" (little button Change InstLoc) - enter the equipment number of Equipment 1 as "superior equipment" - like that the rotation equipment is installed to the Equipment 1
2 step: "Dismantling from EQ1 and installation at EQ2"
If the rotation EQ moves to the next equipemnt, first dismantle it from Equipment 1. With IE02 change again the installation location and delete Equipment 1 as superior equipment. Then enter equipment number of Equipment 2 as superior equipment.
3 step: "Dismantling from EQ2 and isntallation at storage functional location"
IE02 - delete Equipment 2 as superior equipemnt of the rotation equipment and then enter the functional location as installation place.
Hope now it's more clear.
Kind regards from Germany,
P