How to setup Multiuser logging

[dl5ym]

Hello,
hmm will need seperate ADIF-exports for all used calls, + daily reports (QSO-numbers made daily ) including (wish) Operator-ID in aADIF-file as done with contestlogs.

We have family 2 different QTHs ( other LOC) today "synced" with ADIF-files.
we have 2 calls ( dl5yl + dl5ym) and use from time to time several clubcalls ( actual: dl0yly, dk0fws, dl0mol,) + special calls as mmembers in a special-event-group
( actual: dl75brd, dm23buga, dr100rd...changes from time to time)
Old log includes OK8ym/YN and HB0/homecall
All in one database ? What is the limit ? 1.000.000 QSOs and more ?

need a clear (ADIF)export for each callsign incl. Culb/Special calls with ADIF=OP Field if possible.

that all cann be done with seperate MY QTH ?
Asked (german)helpfile but ii is not with any example :-)

73
Fred
dl5ym

ps: LotW still not used