You must be in the Security Administrator role in the global zone.
Edit the label_encodings file.
Use the Edit Encodings action. For details, see How to Create a label_encodings File.
Find the line in the LOCAL DEFINITIONS section that begins with Default User Sensitivity Label.
Default User Sensitivity Label= u; Default User Clearance= c;
Replace the sensitivity label with your desired minimum user label.
The following example shows a new minimum label of c.
Default User Sensitivity Label= c;
Replace the clearance with your desired user clearance.
The following example shows a new clearance of s.
Default User Clearance= s;