# TBCUSTOMIZE System Variable [GstarCAD 2021](Help%20System/GSTARCAD/2021/Index.md) → [System Variables](Help%20System/GSTARCAD/2021/System%20Variables/(System%20Variables).md) → [T](Help%20System/GSTARCAD/2021/System%20Variables/T/(T).md) **Function Description:** The TBCUSTOMIZE system variable is used to control whether users could customize tool palette groups. | | | | --- | --- | | Type | Parameter | | Saved in | Registry | | Initial value | 1 | | Range | 0,1 | It controls whether the CUSTOMIZE command could 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 --- ## Other versions with matching text [GstarCAD 2016](../../../2016/System%20Variables/T/TBCUSTOMIZE%20System%20Variable--7359d47ec6e4.md) · [GstarCAD 2017](Help%20System/GSTARCAD/2017/System%20Variables/T/TBCUSTOMIZE%20System%20Variable--7359d47ec6e4.md) · [GstarCAD 2018](../../../2018/System%20Variables/T/TBCUSTOMIZE%20System%20Variable--7359d47ec6e4.md) · [GstarCAD 2019](../../../2019/System%20Variables/T/TBCUSTOMIZE%20System%20Variable--7359d47ec6e4.md) · [GstarCAD 2020](../../../2020/System%20Variables/T/TBCUSTOMIZE%20System%20Variable--7359d47ec6e4.md)