Hi.
The Doc tab should always be accessible.
To access the Frame tab, you need to directly select a frame or layer in the Timeline panel.
To have the Object tab selected, you need to have something selected on stage, like a raw shape, group or symbol instance.
To have access to the Tool tab, you need to select a tool in the Tools panel that have configurable properties, like the Classic Brush Tool or the Rectangle Tool.
Regards,
JC
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