Hello,
I’ve access to agendas of colleagues and sometimes get a popup for a meeting they have on their side (but I’m not involved in…).
What are the parameters to activate (or not) events reminders on non participating meetings.
PS: I can’t reach all the agendas I access with Outlook or Office365 webmail.
If you right-click on the calendar and choose Properties, you can choose whether to receive reminders or not for that calendar. Otherwise eM Client will use the reminder setting in each event.
On the contact, I get en error when trying to change this property 
Can you post the error message please.
“This folder is not synchronised”
This folder is read only , properties changes have not been saved on server
This is setup as an Internet Calendar?
Office 365 calendar. I’ll check again the setup later on.
So you set it up as CalDAV then, or was this automatically setup with your email account?
I sent a request to get the view on the calendar (with Delegation function) and it came visible.
I don’t know if the colleague gave an agreement or not.
For a few other colleagues, the procedure doesn’t work, nothing is visible.
Is this an Exchange calendar? If not what is it?
Yes it is, I think: Office365 environment
Can you change any settings for the shared calendars through the web interface for your account?
I can try, which one would be interresting to change?
You want to see if you can change the settings for the calendar that you cannot disable the reminders.