Read and Write function for fileEnsembleDatastore function

i am working on Predictive maintenance project where i have to detect Remaining useful life of a Cutting tool. i have downloaded chatter data from an online website. The data is in the form of csv/xlsx file where each column represents data from different sensor and represent different data variables. Raw data does not have any condition variable or independent variable in any of its column. The columns are

1) Axial Force

2) bending moment in x

3) bending moment in y

4) bending moment in z

5) vibration from channel 1

6) vibration from channel 2

7) Power

7) current

i am using predictive maintenance toolbox and I dont know how to read and write to the data and modify Ensemble Property 1) ReadFcn 2) WriteToMemberFcn. i think i need 2 functions 1 for writng to the data and 1 for reading from the data. If some one could please help me with creating those two functions this will be great. I will be Thankful

i have also attached one of the excel file and you can look at that as well.