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Regular and external users can apply time tracking categories to time entries that they add.
Use time tracking categories to categorize the time that you add to tasks through the time tracker and Timesheets.
Timesheets are available only in accounts with Wrike for Professional Services subscription and the Wrike Resource add-on.
Switch to Timelog view or go to Timesheets. You'll see a "Category" column, which displays the category the user chose (the columns will be empty if no category was chosen).
Open (or create) a Timelog Report. Click the gear icon and check the box next to "Category." You'll see a "Category" column, which displays the category the user chose (the columns will be empty if no category was chosen).