# TBCUSTOMIZE System Variable [GstarCAD 2027](Help%20System/GSTARCAD/2027/Index.md) → [System Variables](Help%20System/GSTARCAD/2027/System%20Variables/(System%20Variables).md) **Function Description:** The TBCUSTOMIZE system variable is used to control whether users can customize tool palette groups. | | | | --- | --- | | Type | Parameter | | Saved in | Registry | | Initial value | 1 | | Range | 0,1 | It controls whether the CUSTOMIZE command can used for customizing tool palette groups, and whether display Custom option in toolbar shortcut menu. **System Variable Value:** **0:** disable access customization **1:** enable access customization --- [Original help](https://www.gstarcad.net/help/GstarCAD_2027_en-US/detail/systemVariables/TBCUSTOMIZE.html) · © Gstarsoft Co., Ltd.