Is it permissible or forbidden to use office supplies belonging to the workplace for training courses affiliated with the same workplace?

The employee is bound by what their employer stipulates regarding the use of its tools, because they are entrusted with them. If the entity permits the use of these tools for its affiliated courses, then it is permissible; otherwise, it is not, as the Prophet, peace and blessings be upon him, said: "Muslims are bound by their stipulations."