During the submission process you can choose to put an embargo on your thesis if you want a delayed access. Some students may choose to add an embargo for personal reasons (including personal safety) and/or have patents pending.
You have the option of choosing between 6 months, 1 year, or 2 years for an embargo.
If you want to embargo your thesis for a longer period, you can stipulate that timeline within the tool as YYYY-MM-DD to whatever timeline fits your needs.