By default, AQtime excludes VCL code from profiling. To profile VCL code, you need to disable this option:
Options | Options... | General | General Preferences | Exclude standard source files
Please note that complete support for RAD Studio XE was implemented only in AQtime 7. I have just checked, and AQtime 6 can profile the VCL code of an XE application just fine, but the source code editor panel may show an incorrect source code snippet for a routine. So, it is best to use version 7 of AQtime for RAD Studio XE applications profiling.