Bodylength - Size of the file (in bytes) of the attachment.
Unfortunately, You cannot add this field on notes and attachment-related list as this is not customizable.
The workaround is you can create a simple custom Lightning Component to show attachment as a table.
In sandboxes with Summer '20, they've made using the Salesforce Optimizer easier. It's now an app and the information is viewable in your org (versus PDF output).
I bring this up because this can be useful to point out what objects you're pushing limits on and whether best practice is a lower number.
To directly answer your questions, there's the process ...
Email Alerts and Tasks can be created as many as you can on an Object. I am also providing a few links below as they can be useful for you:
you cannot rename contact label on workorder from rename tabs and labels because contact is a lookup on workorder.
To achieve this, you will have to rename contact object itself from rename tabs and labels Note that when you do this contact look up labels on all objects will now the renamed label
As per https://help.salesforce.com/articleView?language=en_US&type=1&mode=1&id=000349471 , starting Summer'20 Mobile Web Experience would be retired. The alternative that salesforce suggests is to use Salesforce Mobile App.
Starting in June, 2020, you need to have the Salesforce mobile app installed on your device or use Lightning Experience ...