Let's assume that it contains all tasks from within your entire company. In order for your employees to work more efficiently, it is helpful if they can only see their own tasks.
First, open the access settings and select the member for whom you want to adjust access.
After you have selected the desired member, you can see their role.
Please note that access control can only be set for members who have specific roles within the list. For access control, the member's role must be either an editor, a collaborator, a commentator or a guest. Pure list members have access without restrictions.
Once you have customised the role, you can click on "Access Control" below the list of roles.
A filter must be applied to the access control so that the member can only see their own tasks.
Therefore, click on "Filter" in the "Item Restrictions" section and add the desired condition.
The fields in the listing have individual names, which you may have defined yourself. In this case, select the field with the small member symbol. Afterwards, click on the field "Add a member" once again and select the corresponding member.
As soon as you apply a filter, a text field is always applied by default. You can delete this by hovering over it and clicking on the "X" that appears shortly afterwards.
Once you have added all the desired conditions, you can click on "Done" in the upper right corner. You can then return to the general overview of the member. To save the access restriction, select "Save" again in the upper right corner.
You can also select field restrictions. You can find out more about this here.