Many other apps including Calengoo and aCalendar+ offer multiple contact linking. This is absolutely a no brainer.

Good day. Please, could you add the option to ADD MORE CONTACTS to
BUSSINESS CALANDAR and TASK.

I would live to have this feature

Yes with a search filter near slide cursot day to filter calendar view gui.
This feature was post in 2015 ( refer to first comment) and really make sense . It is more easy than compile for iOS Platforms and had thé higher number of votes !!! We are now in 2021 june ....not implémented no feedback about dev team ?!!

Et this Time i use BC to Know which people are here. I have an calendar for each people . And i create a group for each différents jobs. I do a job1 and i put myself Alone in a group, in create a group for other job1, other people that do all job2.regroup in group2...i Can easy see thé planning of team
..
It ll ne nice all people if we have a way not only filter by day week ( slide bar)but Also by
1 calendar name,
2 group name
3 name associates with vertical interval of time
4 location
5 contact
An input form texte area that do this ll ne nice

2)
When we create an interval of time we Can associates only one contact ...why not Many and Also group of contact instead have to select all thé contact of a group ?

By implemented this , BC Can manage étudiant planning . Contact Can be a professor, a class name a Domain course....... the location Can be a room name in a building or a contact .
Regard's

Three would be nice, five would be nicer.

I second this request. Additionally, I want to select from contacts groups.

When linking a contact to a new event, it would be very useful if phone numbers and notes would be copied to the notes field.
In BC 2 only name and adress can be selected for copying to 'title' and 'adress' field.

Since it's not that unusual to meet with more than one person, that'd be a great feature

Please allow this for events and tasks.
Thanks.
Bruce

And the anniversary feature! To remember others anniversaries, we should be able to link two people

I think this might involve some extra functionality:

1. Handling multiple contacts individually. Like current functionality with added possibility to link multiple contacts, select one from the linked contacts, and handle it like the current linked contact is handled (send a message to the contact etc.)

2. Handling contacts as groups: Selecting more than one linked contact and do something to all selected contacts (send a message to all selected contacts...)

I would be really happy even with only the first functionality. I guess the second functionality would also be welcome by many users. All this is possibly not quite trivial to implement while keeping the UI simple and intuitive.

I have been asking this for a long time

It would be great if there is a possibility to add more than one contact to a event in calendar. Often there are appointments with more than one contact and the feature of linking contacts to events would be more productive if every participant of the appointment could get added to the event in calendar.