Showing different date format in different device (Desktop/Android mobile app/IOS Mobile App)

Dear Team,

Issue-1

Will require same data format need to be display on each device like Desktop/ Android app & IOS app.Currently it is showing different format in every device. Requesting your assistance to keep same format (DD-MMM-YYYY) for better and clear understanding.

Sharing the screens of 3 different devices for your understanding purpose.

Photo 1-A screenshot of desktop PowerBi (using edge browser) which has date format as MM/DD/YYYY

Photo 2- A screenshot of an iPhone PowerBi app which has date format as DD-MM-YYYY

Photo 3- A screenshot of android tab which has date format as DD/MM/YYYY

Issue-2

While giving an access of workspace or adding the users in dataset security or adding the user under direct access- 
1. can we do bulk load?
2. can we automate this by keeping a file at some location and it will automatically add/remove the users?

Please feel free to revert in case of any query.

Regards,

Umesh Sawant