diff --git a/presentation_powerpoint/meeting_1st/humanoid_robotics_working_group_reading_group_1st_meeting.pdf b/presentation_powerpoint/meeting_1st/humanoid_robotics_working_group_reading_group_1st_meeting.pdf
new file mode 100644
index 0000000..1883958
Binary files /dev/null and b/presentation_powerpoint/meeting_1st/humanoid_robotics_working_group_reading_group_1st_meeting.pdf differ
diff --git a/presentation_powerpoint/meeting_1st/humanoid_robotics_working_group_reading_group_meeting.pptx b/presentation_powerpoint/meeting_1st/humanoid_robotics_working_group_reading_group_1st_meeting.pptx
similarity index 100%
rename from presentation_powerpoint/meeting_1st/humanoid_robotics_working_group_reading_group_meeting.pptx
rename to presentation_powerpoint/meeting_1st/humanoid_robotics_working_group_reading_group_1st_meeting.pptx
diff --git a/presentation_powerpoint/meeting_2st/.~lock.humanoid_robotics_working_group_reading_group_meeting.pptx# b/presentation_powerpoint/meeting_2st/.~lock.humanoid_robotics_working_group_reading_group_meeting.pptx#
deleted file mode 100644
index 2d994c9..0000000
--- a/presentation_powerpoint/meeting_2st/.~lock.humanoid_robotics_working_group_reading_group_meeting.pptx#
+++ /dev/null
@@ -1 +0,0 @@
-,ronaldsonbellande-hplaptop,ronaldsonbellande-hplaptop,15.04.2024 20:04,file:///home/ronaldsonbellande-hplaptop/.config/libreoffice/4;
\ No newline at end of file
diff --git a/presentation_powerpoint/meeting_2st/humanoid_robotics_working_group_reading_group_2nd_meeting.pdf b/presentation_powerpoint/meeting_2st/humanoid_robotics_working_group_reading_group_2nd_meeting.pdf
new file mode 100644
index 0000000..d0ae2e7
Binary files /dev/null and b/presentation_powerpoint/meeting_2st/humanoid_robotics_working_group_reading_group_2nd_meeting.pdf differ
diff --git a/presentation_powerpoint/meeting_2st/humanoid_robotics_working_group_reading_group_meeting.pptx b/presentation_powerpoint/meeting_2st/humanoid_robotics_working_group_reading_group_2nd_meeting.pptx
similarity index 100%
rename from presentation_powerpoint/meeting_2st/humanoid_robotics_working_group_reading_group_meeting.pptx
rename to presentation_powerpoint/meeting_2st/humanoid_robotics_working_group_reading_group_2nd_meeting.pptx