is possible to use as sent and recives

there is what I want it to:

HOST only received will take all data from clients.

Client PC 1,2,3 only sent with different data.

All of them not full sync like how the syncthing work, I mean to be it just to save store.

How to setup it correct way. If I share main folder from HOST to every Clients, after few syncs all pc will show out of sync, If I overwrite, data in HOST will lose

Syncthing is bidirectional sync application. What you want is unidirectional transfers. Syncthing is not made for that.