To change the binding of the «Interaction with the environment» key from the letter F to the LMB, follow the following steps:

1. Open the Keyran program and find the «Management» or «Key Settings» section.
2. In this section, find the «Interaction with the environment» option and open it for editing.
3. Instead of the letter F, select the option «LMB» or «Left Mouse Button».
4. Save the changes.

Please note that after changing the key binding on the LMB, you will need to remove the LMB binding from the «Action with subject» option to avoid a conflict. This can be done as follows:

1. Select the «Action with the item» option in the «Management» or «Key Settings» section.
2. Remove the LMB or Left Mouse Button binding from this option.
3. Save the changes.

After that, you can use the paintwork to interact with the environment.

Now, if you want to use a macro to perform a certain action, for example, breaking a lock, use the following instructions:

1. Make sure that you have selected the last digit of the lock code (4th, rightmost).
2. Make sure that all digits of the lock code after the first one are zero.
3. If the first digit of the lock code is thousands, select any other suitable digit (for example, 3000, 4000, 1000, etc.).
4. Set the rewind time to 100-105 seconds or another value suitable for you.
5. If for some reason you need more time, you can use the values 1000 for rewinding in 17.5 minutes or 10,000 for rewinding in 3 hours.
6. Turn on the macro and wait for the hacking process to complete.
7. After a successful hack, do not forget to return the control key bindings as they were assigned earlier to avoid problems with further gameplay.

Now you can effectively change the binding of the «Interaction with the environment» key, use a macro to crack locks and enjoy the gameplay in DayZ.