If you have only one resource, you will be directed to weekly view on login. For daily view, simply click the daily button on the left of the white banner above your calendar.
If you have more than one resource, you will be directed to daily view on login, where you can view all resources together. For weekly view, simply click the weekly button on the left of the white banner above your calendar.
To change between resources in weekly view, simple click the drop-down on the right of the white banner above your calendar and select the resource whose week you would like to view.
Note: so that you can have a full view of your week to come, your Appointedd calendar will start your weekly view with today (or your selected day).