Historical File Clean-up Help
One of the most common activities FirmWorks Files Customers have is tagging historical files that were uploaded to Salesforce before they started using FirmWorks Files. While we cannot offer a time machine we can suggest some best practices
Adding Collaboration Users
Content Document Links (CDLs) can be created referencing any object. Generally we use CDLs to connect Salesforce records such as Account, Opportunity, Case and more. But we can also use CDLs to give access to people to tag pre existing documents they may not normally see.
Individual File Access
To do this in for individual files use the FirmWorks Files Component and A configuration that allows the Entity Sharing Tab. Here you can link the file to a user. Make sure to give them Record access so they can edit tags.

Bulk Files Access
To do this en masse you will need to use a data loading tool to create CDLs for all the team members who need access to documents.
Each CDL will need the Content Document Id, the User Id and will need to default the Share Type to I (Record). You can choose whatever you like based on your orgs preferences for Visibility, but those 4 fields need to be set on the CDL to successfully upload.
You can use the File Search tab in the FirmWorks Files app to search and download all of the Content Document Ids using the Download Data function from the actions menu.

You can also leverage the Show Untagged Files Button from here to show all untagged files in your org.

Using List View to Update Tags
Once your users have access to the historical Files you can use the FirmWorks Files List View to easily update the tags for those files. This is one of the fastest ways to update files for those without access to Salesforce data loader tools. For more information on the FirmWorks Files List View please click here.
Dataloader to Mass Tag Files
Similar to how you can use Salesforce data loading tools to create CDLs to grant access to tagging files you can also use them to update tags for documents in bulk. Generating a file from Download Data will also pull out all the fields you can tag into the excel. Here you can set up a csv to use with data loading tools. There are a plethora of ways to load data and Salesforce has a lot of best practices so please use the following articles to make the best choice for your needs.