Select channel want to record when storing

Hi

I have 20 channel, but i want record 3 channel (1,3,5)

In the picture, i want to record Frequency, U_rms_L1, cos_phi_L1_H1

In the manual, i can't fint the any option. Please send me 1 way to do it. 

Dear VM KHOI,

thank you for reaching out to us. Please right click on the firs row of the grid and select Edit columns. Then select Store and a new column will appear where you can select which channels will be stored. This can be also done in the channel grid. I have attached a video in the attachment for a reference.

Kind regards.