With the current behavior related to inserting TM, NT, MT matches, which replaces already populated texts in the target segment, and the ability to insert translations by highlighting desired part of text in a CAT result and using CTRL + Insert, there is no way to move the cursor to CAT pane.
Introduce a keyboard shortcut to move the cursor to CAT pane.
Pressing the TAB key in a segment moves the cursor between source and target - maybe this functionality could be further extended to also cover the CAT pane scenario.
Translators try to avoid using mouse while translating. This feature would greatly extend the current options resulting in a more efficient workflow.