A Documill Agreement is similar to any other Salesforce object. That means you could use it with other Salesforce features.
Below are ideas of what you could do with Documill Agreement object:
Create Reports of your Agreements
You can generate Salesforce Reports of Documill Agreements object which can help you see the status of your agreements.
Please refer to Salesforce Reports documentation for further information: Salesforce Reports.
Automatically create a task to renew an agreement
Documill Agreements object can be used in Salesforce Flow to help you automate certain works. For example, you could automatically create a Salesforce Task to remind you to renew a reoccurring agreement when it is about to end.
Please refer to Salesforce Flow documentation for further information: Salesforce Flow.