Google sheets docs forms apps scripts

I would like to learn about apps - scripts a.s.o. on the google plattform ... so I need your help to do so.

Contact - Management : Google Contact Google-Sheets Google-Form

Calendar - Managment: Google Calendar Google-Sheets/Google-ContactMerge Google Docs and/or Gmail

Invoice - Management: Google Calendar -> Google Sheets Google Contacts -> History - Managment

... a.s.o.

2 - 4 users 1000 to 2000 contacts

we need access in parallel to min. 2 - 4 Data-Sets (ev. 1 x Google Contacts and. e.g. 2 x Sheets/Calendar/Docs/Forms

or we use several Google accounts with Google Contacts/Sheets/Calendar/Docs/Forms

.. at least 1 set will be run in a new Google Workspace account

PLEASE - we would like to translate user-texts a.s.o. in german language and also "hard-wire" fieldname-conversions ... and learn how it works so we can also do some work inside functions a.s.o.

Thank you very much in advance to your proposition of collaboration.

Google App Engine Google APIs Google Docs Google Sheets Virtual Assistant Solutions (Alexa, Google, Siri, Home Kit, Cortana)

Projekt ID: #30151560

Om projektet