Saved Search Linking feature allows to relate multiple saved searches to the objects of choice, providing quick navigation to relevant Salesforce records.
To enable given feature for your org you first need to select the objects to which Saved searches can be linked. For that navigate to Ascendix Search Setup.

Under Object Manager tab column Search Linking will allow you to enable specific objects to be linked to Saved searches by checking corresponding checkboxes.
note: not all objects can be enabled for the linking. The objects you choose must also be searchable and mappable (Searchable and Mappable columns).

Security button will allow you to configure for which profiles linking with the given object will be enabled.
Once the objects are enabled, component to show the Saved Searches for the given object records must be added. To do that, navigate to Lightning App builder for the objects you enabled it for and add Saved Search Linking component to the layout.

Once component is added to the layout, users will be able to start linking their Saved Searches and see them on the corresponding records.

For user guidance on Saved Searches linking navigate to Saved Searches linking user guide.